Hi, I have a fairly new external USB disk that frequently throws errors. When these occur, the disk becomes partially or totally inaccessible. Even worse, when I try to umount it, the umount hangs indefinitely, using 100% of one of my cpu cores. I haven't yet found any way to recover short of hard booting (long press of the power button) the system (soft booting - halt, reboot, poweroff - hang). smart seems to show no errors, and I have yet to discover any actual data corruption - I typically run fsck upon reboot, and it sometimes reports no problems, and sometimes a couple of simple ones that it can fix. The whole disk is a physical volume for a dm-crypt / cryptsetup [LUKS] encrypted volume. The system is currently Jessie with systemd, but I believe I began having more or less the same problems with my previous Wheezy install. The machine is a ThinkPad T61. Any ideas?
$ lsusb Bus 007 Device 002: ID 1058:0830 Western Digital Technologies, Inc. # smartctl -a /dev/sdb -d sat smartctl 6.4 2014-10-07 r4002 [x86_64-linux-3.18.19-lizzie] (local build) Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Western Digital Elements / My Passport (USB, AF) Device Model: WDC WD10JMVW-11AJGS3 Serial Number: WD-WXR1E848NUEZ LU WWN Device Id: 5 0014ee 60534064a Firmware Version: 01.01A01 User Capacity: 1,000,171,332,096 bytes [1.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5400 rpm Device is: In smartctl database [for details use: -P show] ATA Version is: ACS-2 (minor revision not indicated) SATA Version is: SATA 3.0, 3.0 Gb/s (current: 3.0 Gb/s) ... SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0027 154 109 021 Pre-fail Always - 3266 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 213 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 632 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 134 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 42 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 2008 194 Temperature_Celsius 0x0022 113 093 000 Old_age Always - 34 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0 SMART Error Log Version: 1 No Errors Logged [A typical batch of errors found in syslog when the disk goes offline:] Jul 27 13:46:21 lizzie kernel: [81183.018191] EXT4-fs warning (device dm-6): __ext4_read_dirblock:884: error -5 reading directory block (ino 25690113, block 0) Jul 27 13:46:21 lizzie kernel: [81183.019891] EXT4-fs warning (device dm-6): __ext4_read_dirblock:884: error -5 reading directory block (ino 46925124, block 0) Jul 27 13:46:22 lizzie kernel: [81184.154747] EXT4-fs warning (device dm-6): __ext4_read_dirblock:884: error -5 reading directory block (ino 25690113, block 0) Jul 27 13:46:23 lizzie kernel: [81184.943103] EXT4-fs warning (device dm-6): __ext4_read_dirblock:884: error -5 reading directory block (ino 2, block 0) Jul 27 13:46:23 lizzie kernel: [81184.943147] EXT4-fs error (device dm-6): __ext4_get_inode_loc:3809: inode #2: block 1057: comm mc: unable to read itable block Jul 27 13:46:23 lizzie kernel: [81184.943269] Buffer I/O error on dev dm-6, logical block 0, lost sync page write Jul 27 13:46:23 lizzie kernel: [81184.943282] EXT4-fs error (device dm-6) in ext4_reserve_inode_write:4775: IO failure Jul 27 13:46:23 lizzie kernel: [81184.943285] EXT4-fs (dm-6): previous I/O error to superblock detected Jul 27 13:46:23 lizzie kernel: [81184.943383] Buffer I/O error on dev dm-6, logical block 0, lost sync page write Jul 27 13:46:24 lizzie kernel: [81186.059725] EXT4-fs warning (device dm-6): __ext4_read_dirblock:884: error -5 reading directory block (ino 2, block 0) Jul 27 13:46:28 lizzie kernel: [81190.720273] Aborting journal on device dm-6-8. Jul 27 13:46:28 lizzie kernel: [81190.720436] Buffer I/O error on dev dm-6, logical block 121667584, lost sync page write Jul 27 13:46:28 lizzie kernel: [81190.720475] JBD2: Error -5 detected when updating journal superblock for dm-6-8. Celejar -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150727220831.bc318adba0a8812d9870e...@gmail.com
